Table 5 Univariate logistic regression analysis of the factors associated with idiopathic scoliosis
Variable | P | OR | 95%CI |
|---|---|---|---|
Gender | |||
 Male |  | 1.0 | (Reference) |
 Female | <0.001 | 2.80 | (2.03,3.87) |
Having myopia | |||
 No |  | 1.0 | (Reference) |
 Unclear | 0.524 | 0.85 | (0.52,1.40) |
 Yes | 0.005 | 1.62 | (1.16,2.26) |
Keep good posture while reading | |||
 No |  | 1.0 | (Reference) |
 Yes | 0.947 | 1.01 | (0.74,1.37) |
Relax back after sitting for a long time | |||
 Never |  | 1.0 | (Reference) |
 Sometimes | 0.284 | 1.24 | (0.84,1.83) |
 Usually | 0.817 | 0.94 | (0.55,1.60) |
Self-sensation of scoliosis with symptoms | |||
 No |  | 1.0 | (Reference) |
 Not clear | 0.144 | 1.28 | (0.92,1.79) |
 Yes | <0.001 | 5.101 | (3.11,8.38) |
Sleep time | Â | Â | Â |
 10 to 11 h |  | 1.0 | (Reference) |
 9 to 10 h | 0.043 | 4.38 | (1.05,18.35) |
 8 to 9 h | 0.105 | 3.22 | (0.78,13.26) |
 Less than 8 h | 0.219 | 2.54 | (0.57,11.28) |
Duration of reading | |||
 More than 3 h |  | 1.0 | (Reference) |
 2 to 3 h | 0.820 | 0.92 | (0.44,1.93) |
 1 to 2 h | 0.503 | 0.79 | (0.40,1.57) |
 Less than 1 h | 0.929 | 0.97 | (0.48,1.97) |
Duration of exercise | |||
 More than 3 h |  | 1.0 | (Reference) |
 2 to 3 h | 0.072 | 6.69 | (0.85,52.93) |
 1 to 2 h | 0.035 | 8.48 | (1.17,61.73) |
 Less than 1 h | 0.025 | 9.68 | (1.34,70.01) |